Compilare: main.cpp: In function 'void DFS(int)': main.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | while(poz[k] < L[k].size()) | ~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:43:12: warning: unused variable 'j' [-Wunused-variable] 43 | int i, j; | ^